典型船用复合材料防火隔热特性研究  

Research on the Thermal Insulation Performance of Marine Composite

作　　者：董舟俊 陈国涛[1] 梅志远[1] 张焱[2] DONG Zhou-jun;CHEN Guo-tao;MEI Zhi-yuan;ZHANG Yan(College of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China;School of Civil Engineering,Central South University,Changsha 410075,China)

机构地区：[1]海军工程大学舰船与海洋学院,湖北武汉430033 [2]中南大学土木工程学院,湖南长沙410075

出　　处：《塑料工业》2021年第12期100-106,共7页China Plastics Industry

基　　金：国家自然科学基金面上资助项目(51479205);海军工程大学自主立项资助项目(2020505040)。

摘　　要：为了开展典型舰用复合材料隔热特性研究,首先对复合材料层合板结构和夹层结构两种结构形式在ISO 834标准火灾作用下分别进行了耐火试验,得到了两者背火面温度变化情况;在此基础上,为了深入探讨不同结构与材料体系的复合材料在标准升温曲线下的隔热特性规律,采用ABAQUS软件对两种结构的复合材料建立了火灾中截面温度场仿真模型,通过参数反演法确定了对流换热系数与热辐射系数,模型仿真计算结果与试验结果吻合性较好。结果表明:(1)若单纯考虑隔热特性,两种结构形式均能达到A-30级,且在试验初始阶段,夹层结构的隔热性能优于层合板;(2)复合材料在高温作用下生成的炭层,一定程度上降低了背火面温度的升高的速率,对提升隔热性能有益;(3)在相同火灾环境下,导热系数是决定隔热性能的关键热物理性能参数,导热系数越小,复合材料的隔热能力越好。In order to carry out the research on the thermal insulation characteristics of typical marine composite materials, the fire tests of composite laminated plate structure and sandwich structure under ISO 834 standard fire curve were carried out, respectively.Then the temperature behavior of side unexposed to fire of the two structures were obtained.On this basis, in order to further explore the thermal insulation characteristics of composite with different structures and material systems under the standard fire curve, the large-scale finite element calculation software ABAQUS was used to establish the simulation calculation model of cross-section temperature field for the two composite structures in fire.The convective heat transfer coefficient and thermal radiation coefficient were determined by parameter inversion method.The simulation results of the model are in good agreement with the experimental results.The results show that if only considering the thermal insulation characteristics, both types of specimens can reach A-30 grade.And the insulation performance of sandwich structure is better than that of laminated plate at the beginning of test.The carbon layer formed under high temperature reduces the rate of the temperature rise of side unexposed to fire to a certain extent, which is beneficial to improve the thermal insulation performance.Under the same fire environment, thermal conductivity is the key thermal physical parameters to determine the thermal insulation performance.The smaller the thermal conductivity is, the better the thermal insulation performance of the composite is.

关 键 词：树脂基复合材料 有限元分析 隔热性 温度场 耐火试验 

分 类 号：TU352.5[建筑科学—结构工程] TB332[一般工业技术—材料科学与工程]